P b€ g /• D e™ • Q Dell 1907FPc Service Manual 19” LCD MONITOR DELL 1907FPc THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
/• D e™ • Q Dell 1907FPc Revision List Revision Release Date Revise history TPV model Remark T980KSCDKRDFUP T980KSCDKRDMUP Nov.-28-2005 Initial Release T980KGCHKRDGUP T980KGCHKRDEUP ROHS BOM Sold area in EU and attach the T980KSCHBRDGQP Dec.22-2005 corresponding BOM Mar.-28-2006...
/• D e™ • Q Dell 1907FPc ECN History ECN No. Change Description Service Deposition Cut-in date Rework on VFF and customer complain power button defect; Enhance the button Purge service center parts ECN-D-EE105 Dec-24-2006 structure inventory.
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINGS Proper service and repair is important to the safe, reliable operation of all Dell Company** Equipment. The service procedures recommended by Dell and described in this service manual are effective methods of performing service operations.
165MHz (Max) Optimal preset resolution 1280 x 1024 at 60 Hz Highest preset resolution 1280 x 1024 at 75 Hz Plug & Play VESA DDC ON Mode (with Dell Sound bar and USB <65W EPA ENERGY active) ® STAR OFF Mode <3W...
/• D e™ • Q Dell 1907FPc 2. LCD Monitor Description The LCD monitor will contain a main board, Power board, key board, and USB board which house the flat panel control logic, brightness control logic and DDC.
/• D e™ • Q Dell 1907FPc 3. Operation instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.
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Use the Input Select button to select between two different video signals that may be connected to your monitor. NOTE: The floating 'Dell Self-test Feature Check' dialog appears on a black background If the monitor cannot sense a video signal. Depending upon the selected input, one of the dialogs shown below will scroll continually.
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Use to mount the monitor. (Behind attached base plate) Barcode serial number label Refer to this label if you need to contact Dell for technical support. Security lock slot Use a security lock with the slot to help secure your monitor.
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/• D e™ • Q Dell 1907FPc Power connector Insert the power cable. Dell Soundbar power connector Connect the power cord for the Soundbar (optional). DVI connector Connect your computer DVI cable. VGA connector Connect your computer VGA cable.
/• D e™ • Q Dell 1907FPc 3.3 Adjusting the Picture NOTE: If you change the settings and then either proceed to another menu, or exit the OSD menu, the monitor automatically saves those changes. The changes are also saved if you change the settings and then wait for the OSD menu to disappear.
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/• D e™ • Q Dell 1907FPc Menu and Icon Description Submenus Exit Select to exit the Main menu Brightness/ Brightness adjusts the luminance of the backlight. Contrast Adjust Brightness first, then adjust Contrast only if further adjustment is necessary.
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/• D e™ • Q Dell 1907FPc NOTE: When using DVI source, the Positioning option is not available. Auto Adjust Even though your computer recognizes your monitor on startup, the Auto Adjustment function optimizes the display settings for use with your particular setup.
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/• D e™ • Q Dell 1907FPc Blue Preset The color hue is most noticeable in areas of white. • Red Preset Blue Preset is selected to obtain a bluish tint. This color setting is typically used for text based applications (spreadsheets, programming, Normal text editors, etc.).
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/• D e™ • Q Dell 1907FPc NOTE: When the OSD is locked, pressing the menu button takes the user directly to the OSD settings menu, with OSD Lock selected. Select No (-) to unlock and allow user access to all applicable settings.
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/• D e™ • Q Dell 1907FPc NOTE: When the Dell Soundbar is not properly connected to the monitor, the audio menu is not available. Reset the OSD menu options to the factory-preset values. Factory Reset: Exit — Select to exit out of Reset to Factory Settings menu without resetting any OSD options.
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P b€ g /• D e™ • Q Dell 1907FPc NOTE: The floating Dell Self-test Feature Check dialog appears on-screen if the monitor cannot sense a video signal. Occasionally, no warning message appears, but the screen is blank. This could also indicate that the monitor is not synchronizing with the computer.
/• D e™ • Q Dell 1907FPc 1. Turn off your computer and disconnect the power cable. 2. Connect either the white DVI or blue VGA cables to the connectors on the computer and the monitor. Connect the USB cable that was included with your monitor to the computer and the upstream USB connector on the monitor.
/• D e™ • Q Dell 1907FPc 4. Input/Output Specification 4.1 Input Signal Connector 4.1.1 D-Sub Connector Signal Assignment Pin. Signal Assignment Red Video DDC +5V Green Video GND-Sync Blue Video DDC Data Self Test H-Sync R-Ground...
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P b€ g /• D e™ • Q Dell 1907FPc 1) MCU Initializes. 2) Is the EEprom blank? 3) Program the EEprom by default values. 4) Get the PWM value of brightness from EEprom. 5) Is the power key pressed? 6) Clear all global flags.
. m a 1 6 3 . c o m u 5 [ P b € g / • D e ™ • Q Dell 1907FPc 5.3 Electrical Block Diagram 5.3.1 Main Board X301 LCD Interface CRYSTAL 14.318MHzHC-49U...
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P b€ g /• D e™ • Q Dell 1907FPc 5.3.2 Inverter/Power Board...
/• D e™ • Q Dell 1907FPc 6.3 USB Board USB5V F701 VBUS1 5V 0.75A FB701 +12V USB Switch VBUS0 VBUS1A FB707 U702 To scalar GPO-2 #57 120 OHM AP1510 R710 R701 U701 1/16W C705 120 OHM...
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. m a 1 6 3 . c o m u 5 [ P b € g / • D e ™ • Q Dell 1907FPc CN705 CONNNECTOR C732 0.1uF/16V CN707 C733 CONN CN706 0.1uF/16V CONNNECTOR Title <Title>...
/• D e™ • Q Dell 1907FPc 8. Mechanical Instruction Tools: 2 Power screwdrivers (φ=5mm,L=60mm); 1 small cross screwdriver; turnbuckle driver; Setting: Power screwdriver torque A=11 kgF. Cm; torque B=6 kgF. Cm Note: Firstly, put the monitor on a soft, flat and clean surface, wear gloves.
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/• D e™ • Q Dell 1907FPc 3. Take off the bezel Remove rear cover : Turn over the monitor as the Fig, hold the rear cover, and then slightly remove it. Remove the shield : 1. Remove the 4 screws by...
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/• D e™ • Q Dell 1907FPc 2. Remove the USB2 board cover by Torque B or by manual 3. Remove the 5 screws by Torque B or by manual 4. Disconnect the wire harness between USB1 and USB2...
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/• D e™ • Q Dell 1907FPc 5. Push the main shield as the arrowhead direction Disconnect the connector pin: Disconnect the connector pin between key and main boards Install: Lay the KEPC cable as the figure...
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/• D e™ • Q Dell 1907FPc Remove USB and main board : 1. Remove the 7 screws by Torque B 2. Disconnect the connector wire...
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P b€ g /• D e™ • Q Dell 1907FPc 3. Disconnect the wire harness between main board and panel Note: Make LVDS connector’s metal side adown for SAMSUNG panel and upturned for other panel. EVA washers Magnetism ring...
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/• D e™ • Q Dell 1907FPc 4. Disconnect the wire holder Install: Lay the cables as the line direction Remove the power board : Remove the 5 screws by Torque...
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/• D e™ • Q Dell 1907FPc Disconnect wire harness : Disconnect the wire harness between power board and lamps Fix the CCFL connector by black tapes as the figure Remove USB board : Remove the 2 screws by...
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/• D e™ • Q Dell 1907FPc Remove the main frame : Remove the 4 screws (left and right) by manual or torque = 3kgF.Cm Cable hook Cable hook Samsung panel: The CCFL line can’t overtop dashed...
P b€ g /• D e™ • Q Dell 1907FPc 9. Maintainability 9.1 Equipments and Tools Requirement 1. Voltage meter 2. Oscilloscope 3. Pattern Generator 4. LCD Color Analyzer 5. Service Manual 6. User Manual...
/• D e™ • Q Dell 1907FPc 9.2 Trouble shooting 9.2.1 Main Board Note: 1. If replace “Main-Board”, Please re-do “DDC-content” programmed & “White-Balance”. 2. If replace “Power Board” only, Please re-do “ White-Balance”. No power No power...
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/• D e™ • Q Dell 1907FPc No picture (LED is orange) No picture Measure U601 PIN2=3.3V U602 PIN2=1.8V Replace U601, U602 X301 oscillate waveforms are normal Replace X301 Check if the sync signal from computer is output and video cable...
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/• D e™ • Q Dell 1907FPc White screen White screen Measure Q603 base X301 oscillate waveform is normal is high level? Replace X301 Check Q602, Q603 is broken Check reset circuit of or CN501 solder? U401 is normal...
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/• D e™ • Q Dell 1907FPc 9.2.2 Inverter/Power Board No Power No power Check AC line volt 110V or 220V Check AC line Check the voltage of C903(+) Check F901, bridge rectified circuit Check start voltage for the pin3 of IC901...
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/• D e™ • Q Dell 1907FPc No Backlight Check C811=12V Check adapter Check ON/OFF signal Check Interface board Check IC801 PIN2=5V+-0.25V Check Q801,Q802,Q813,ZD801 circuit Check IC801 PIN10=5V Check Q801,Q802,Q813,ZD801 circuit Check IC801 PIN13 triangular wave is normal...
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/• D e™ • Q Dell 1907FPc 9.2.3 Key Board OSD is unstable or not working Is Keypad board connecting normally? Connect Keypad Board Is Button Switch normally? Replace Button Switch Is Keypad board normally? Replace Keypad Board...
/• D e™ • Q Dell 1907FPc 10. White balance, Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 3 to 6500 K colors, MEM.
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. m a 1 6 3 . c o m u 5 [ P b € g / • D e ™ • Q Dell 1907FPc 18. Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100 19.
/• D e™ • Q Dell 1907FPc 12. ISP Instruction 12.1 Software requirement and connection Operating system requirement (1) Microsoft windows OS. (2) 100M free hard-drive space. (3) 1 free parallel port for DDC2BI communication. The hardware Connection...
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/• D e™ • Q Dell 1907FPc 12.2 Install the software (Gprobe 5.0) for ISP Writer A. Double-click the Install software Select the folder where you would like Genesis Gprobe 5 to be installed Completing the Genesis Gprobe 5 setup wizard...
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/• D e™ • Q Dell 1907FPc B. Next, install the Update software Completing the update 1 for Genesis Gprobe 5.0 setup wizard C. Copy the to C: program files → GProbe5.0.0.15 → Genesis Microchip → GProbe 5...
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/• D e™ • Q Dell 1907FPc 12.3 Run program After the installation, a short-cut icon will appear on your desktop, double click it will run the program. (1). Select the IC type (NOTE: If there is not this selection, please check the “ChipDB”): Note: Firstly, you can check the I²C normal or not by inputting the “test”...
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/• D e™ • Q Dell 1907FPc Set the Connection Settings → Connection → Device to Parallel, click OK! (3). Select Commands → Batch:...
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19TLB4 (.txt) Click open. (4). Unplug the Dell AC power, until the LED indicator is off, press Enter or Execute button, when the .txt of MCU is in gray, for example , re-plug Dell AC power, Writer is in progress.
. m a 1 6 3 . c o m u 5 [ P b € g / • D e ™ • Q Dell 1907FPc 13. Check List 1) After replacing LCD Main board and panel, Check if white-balance is within the specs, then re-writing DDC is necessary.
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/• D e™ • Q Dell 1907FPc 7. Select Exit to the upper menu after completing the adjustment. Then press POWER OFF to exit and save it. 3) Steps for writing DDC 1. Employ PC, and connect the DDC-writing instrument and the instrument that is ready for writing into DDC to the power of 12V.
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/• D e™ • Q Dell 1907FPc Notes: 1. Make sure the system time of PC is in accordance with the real time before writing. 2. The schematic picture is just as an example for description; the exact content of the DDC is dependent on the serial number of the BARCORD of this model.
/• D e™ • Q Dell 1907FPc 14. BOM List Different key Parts List Part NO Description Quantity Unit Remark 750GLG90E3T21Z D 19" TLB2 ZBD PANEL T980KGCHKRDEUP 750GLG90E3T41Z D LPL 19" TLB4 ZBD PANEL T980KGCHKRDGUP 750GLS90EX1 Z SEC 19"...
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/• D e™ • Q Dell 1907FPc L702 73G253S 1 B CHOKE COIL L703 73G253S 1 B CHOKE COIL L704 73G253S 1 B CHOKE COIL L705 73G253S 1 B CHOKE COIL L706 73G253S 1 B CHOKE COIL...
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/• D e™ • Q Dell 1907FPc 34G1759 SN B RISER-FRONT-COVER 34G1760 SN B RISER BACK COVER 37G 551 2 HINGE ASSY(19") 52G6025 11900 MYLAR FOR STAND HOLDER 85G 724 1 SHIELD COVER M1G 130 5120 SCREW...
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/• D e™ • Q Dell 1907FPc T980KSCHBRDGQP Location Part No. Description Quantity Unit CONVERSION BOARD CBPC980KSCDLP VER:A00,V4C09 KEPC980KB9P KEY BOARD PWPC1942SED3P POWER BOARD VER:A00 USB780A2P USB BOARD USB980A1P USB BOARD 11G6070 1 TIE MOUNTS 11G6092 1...
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/• D e™ • Q Dell 1907FPc 70G1900700 3C CD MANUAL 85G 725 1 SHIELD USB 89G 175 9 USB CABLE E089B 89G 728GAA 2D SIGNAL CABLE E089D 89G174ELAA 1 DVI CABLE E095 95G8018 30 99 PANEL HARNESS...
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/• D e™ • Q Dell 1907FPc SW02 77G 605 1 AL GP SMD SWITCH SW03 77G 605 1 AL GP SMD SWITCH SW04 77G 605 1 AL GP SMD SWITCH SW05 77G 605 1 AL GP...
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/• D e™ • Q Dell 1907FPc L902 73G 174 77 L LINE FILTER L921 73G 253 91 LS CHOKE BY LI SHIN L922 73G 253 91 LS CHOKE BY LI SHIN T901 80GL17T 32 L ADAPTOR BY LITAI...
P b€ g /• D e™ • Q Dell 1907FPc 15. Definition Of Pixel Defects Type 1. 750GLG90E3T21Z D LM190E03-TLB2 Dot Defect Bright Dot Dark Dot...
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/• D e™ • Q Dell 1907FPc Total amount of Dot Defects -------------------------5 Max(Combination) Polarizer Defects Foreign Material Line Defect Bezel Appearance Others...
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/• D e™ • Q Dell 1907FPc Type 2. 750GLG90E3T41Z D LM190E03-TLB4 Dot Defect Bright Dot Dark Dot Total amount of Dot Defects -------------------------5 Max(Combination) Polarizer Defects...
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/• D e™ • Q Dell 1907FPc Foreign Material Line Defect Bezel Appearance Others Type 3. 750GLS90EX1 Z LTM190EX-L01...
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